From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2B0AC433FE for ; Tue, 8 Dec 2020 19:04:32 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 691F723B28 for ; Tue, 8 Dec 2020 19:04:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 691F723B28 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E19496E951; Tue, 8 Dec 2020 19:04:31 +0000 (UTC) Received: from fireflyinternet.com (unknown [77.68.26.236]) by gabe.freedesktop.org (Postfix) with ESMTPS id BDC776E951 for ; Tue, 8 Dec 2020 19:04:30 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from localhost (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP (TLS) id 23257963-1500050 for multiple; Tue, 08 Dec 2020 19:04:27 +0000 MIME-Version: 1.0 In-Reply-To: <20201208185702.31852-1-chris@chris-wilson.co.uk> References: <20201208185702.31852-1-chris@chris-wilson.co.uk> From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Tue, 08 Dec 2020 19:04:26 +0000 Message-ID: <160745426641.31456.12363443172320792891@build.alporthouse.com> User-Agent: alot/0.9 Subject: Re: [Intel-gfx] [PATCH] drm/i915/gt: Disable preparser around MI_SEMAPHORE_WAIT X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Quoting Chris Wilson (2020-12-08 18:57:02) > @@ -5015,6 +5010,7 @@ gen11_emit_fini_breadcrumb_rcs(struct i915_request *request, u32 *cs) > > static u32 *gen12_emit_preempt_busywait(struct i915_request *request, u32 *cs) > { > + *cs++ = gen12_preparser_disable(true); /* Wa_1607297627:tgl,dg1,rkl */ > *cs++ = MI_SEMAPHORE_WAIT_TOKEN | > MI_SEMAPHORE_GLOBAL_GTT | > MI_SEMAPHORE_POLL | I'm wondering if MI_SEMAPHORE_POLL prevents idling & RDOP, so the w/a is not required? -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx